The daily number of work labor is radical changeable in a jobsite when the contractors build a construction project. To improve this situation, various construction-planning methods were studied. But in recent years, because the building become high-rise and large-scale, it is very difficult to plan schedule with effective building production using past planning method, and construction planning included repetitive schedule is frequently planned. There are many past studies about construction planning of repetitive work, but until now, schedule planning is still depended on experience of the manager of construction site. Then, in this paper, the authors build a model of repetitive work, and search the optimization of this schedule planning with theory of constraints.